diff options
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c new file mode 100644 index 000000000000..9ec0313f13fc --- /dev/null +++ b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c @@ -0,0 +1,181 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Marvell OcteonTx2 RVU Physcial Function ethernet driver + * + * Copyright (C) 2020 Marvell. + */ + +#include "cn10k.h" +#include "otx2_reg.h" +#include "otx2_struct.h" + +static struct dev_hw_ops otx2_hw_ops = { + .sq_aq_init = otx2_sq_aq_init, + .sqe_flush = otx2_sqe_flush, + .aura_freeptr = otx2_aura_freeptr, + .refill_pool_ptrs = otx2_refill_pool_ptrs, +}; + +static struct dev_hw_ops cn10k_hw_ops = { + .sq_aq_init = cn10k_sq_aq_init, + .sqe_flush = cn10k_sqe_flush, + .aura_freeptr = cn10k_aura_freeptr, + .refill_pool_ptrs = cn10k_refill_pool_ptrs, +}; + +int cn10k_pf_lmtst_init(struct otx2_nic *pf) +{ + int size, num_lines; + u64 base; + + if (!test_bit(CN10K_LMTST, &pf->hw.cap_flag)) { + pf->hw_ops = &otx2_hw_ops; + return 0; + } + + pf->hw_ops = &cn10k_hw_ops; + base = pci_resource_start(pf->pdev, PCI_MBOX_BAR_NUM) + + (MBOX_SIZE * (pf->total_vfs + 1)); + + size = pci_resource_len(pf->pdev, PCI_MBOX_BAR_NUM) - + (MBOX_SIZE * (pf->total_vfs + 1)); + + pf->hw.lmt_base = ioremap(base, size); + + if (!pf->hw.lmt_base) { + dev_err(pf->dev, "Unable to map PF LMTST region\n"); + return -ENOMEM; + } + + /* FIXME: Get the num of LMTST lines from LMT table */ + pf->tot_lmt_lines = size / LMT_LINE_SIZE; + num_lines = (pf->tot_lmt_lines - NIX_LMTID_BASE) / + pf->hw.tx_queues; + /* Number of LMT lines per SQ queues */ + pf->nix_lmt_lines = num_lines > 32 ? 32 : num_lines; + + pf->nix_lmt_size = pf->nix_lmt_lines * LMT_LINE_SIZE; + return 0; +} + +int cn10k_vf_lmtst_init(struct otx2_nic *vf) +{ + int size, num_lines; + + if (!test_bit(CN10K_LMTST, &vf->hw.cap_flag)) { + vf->hw_ops = &otx2_hw_ops; + return 0; + } + + vf->hw_ops = &cn10k_hw_ops; + size = pci_resource_len(vf->pdev, PCI_MBOX_BAR_NUM); + vf->hw.lmt_base = ioremap_wc(pci_resource_start(vf->pdev, + PCI_MBOX_BAR_NUM), + size); + if (!vf->hw.lmt_base) { + dev_err(vf->dev, "Unable to map VF LMTST region\n"); + return -ENOMEM; + } + + vf->tot_lmt_lines = size / LMT_LINE_SIZE; + /* LMTST lines per SQ */ + num_lines = (vf->tot_lmt_lines - NIX_LMTID_BASE) / + vf->hw.tx_queues; + vf->nix_lmt_lines = num_lines > 32 ? 32 : num_lines; + vf->nix_lmt_size = vf->nix_lmt_lines * LMT_LINE_SIZE; + return 0; +} +EXPORT_SYMBOL(cn10k_vf_lmtst_init); + +int cn10k_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura) +{ + struct nix_cn10k_aq_enq_req *aq; + struct otx2_nic *pfvf = dev; + struct otx2_snd_queue *sq; + + sq = &pfvf->qset.sq[qidx]; + sq->lmt_addr = (__force u64 *)((u64)pfvf->hw.nix_lmt_base + + (qidx * pfvf->nix_lmt_size)); + + /* Get memory to put this msg */ + aq = otx2_mbox_alloc_msg_nix_cn10k_aq_enq(&pfvf->mbox); + if (!aq) + return -ENOMEM; + + aq->sq.cq = pfvf->hw.rx_queues + qidx; + aq->sq.max_sqe_size = NIX_MAXSQESZ_W16; /* 128 byte */ + aq->sq.cq_ena = 1; + aq->sq.ena = 1; + /* Only one SMQ is allocated, map all SQ's to that SMQ */ + aq->sq.smq = pfvf->hw.txschq_list[NIX_TXSCH_LVL_SMQ][0]; + /* FIXME: set based on NIX_AF_DWRR_RPM_MTU*/ + aq->sq.smq_rr_weight = pfvf->netdev->mtu; + aq->sq.default_chan = pfvf->hw.tx_chan_base; + aq->sq.sqe_stype = NIX_STYPE_STF; /* Cache SQB */ + aq->sq.sqb_aura = sqb_aura; + aq->sq.sq_int_ena = NIX_SQINT_BITS; + aq->sq.qint_idx = 0; + /* Due pipelining impact minimum 2000 unused SQ CQE's + * need to maintain to avoid CQ overflow. + */ + aq->sq.cq_limit = ((SEND_CQ_SKID * 256) / (pfvf->qset.sqe_cnt)); + + /* Fill AQ info */ + aq->qidx = qidx; + aq->ctype = NIX_AQ_CTYPE_SQ; + aq->op = NIX_AQ_INSTOP_INIT; + + return otx2_sync_mbox_msg(&pfvf->mbox); +} + +#define NPA_MAX_BURST 16 +void cn10k_refill_pool_ptrs(void *dev, struct otx2_cq_queue *cq) +{ + struct otx2_nic *pfvf = dev; + u64 ptrs[NPA_MAX_BURST]; + int num_ptrs = 1; + dma_addr_t bufptr; + + /* Refill pool with new buffers */ + while (cq->pool_ptrs) { + if (otx2_alloc_buffer(pfvf, cq, &bufptr)) { + if (num_ptrs--) + __cn10k_aura_freeptr(pfvf, cq->cq_idx, ptrs, + num_ptrs, + cq->rbpool->lmt_addr); + break; + } + cq->pool_ptrs--; + ptrs[num_ptrs] = (u64)bufptr + OTX2_HEAD_ROOM; + num_ptrs++; + if (num_ptrs == NPA_MAX_BURST || cq->pool_ptrs == 0) { + __cn10k_aura_freeptr(pfvf, cq->cq_idx, ptrs, + num_ptrs, + cq->rbpool->lmt_addr); + num_ptrs = 1; + } + } +} + +void cn10k_sqe_flush(void *dev, struct otx2_snd_queue *sq, int size, int qidx) +{ + struct otx2_nic *pfvf = dev; + int lmt_id = NIX_LMTID_BASE + (qidx * pfvf->nix_lmt_lines); + u64 val = 0, tar_addr = 0; + + /* FIXME: val[0:10] LMT_ID. + * [12:15] no of LMTST - 1 in the burst. + * [19:63] data size of each LMTST in the burst except first. + */ + val = (lmt_id & 0x7FF); + /* Target address for LMTST flush tells HW how many 128bit + * words are present. + * tar_addr[6:4] size of first LMTST - 1 in units of 128b. + */ + tar_addr |= sq->io_addr | (((size / 16) - 1) & 0x7) << 4; + dma_wmb(); + memcpy(sq->lmt_addr, sq->sqe_base, size); + cn10k_lmt_flush(val, tar_addr); + + sq->head++; + sq->head &= (sq->sqe_cnt - 1); +} |